Crimson Clover - Trifolium incarnatumAn annual legume with short spikes of deep red or mauve flowers. It can be used as a shade-tolerant flower in a garden to attract beneficial insects, or it can be sown away from a garden to lure rabbits away from plants. Crimson clover is also a nutritious grazing plant for livestock, and it is commonly planted as a cover crop on farms because it fixes nitrogen in the soil, suppresses weeds and reduces erosion.